Merge branch 'dev/teguh' into 'feat/BE/US-35/stock-transfer'

[FEAT/BE][US#35/TASK#58,59,60,61] Complete stock transfer API, DB schema, validation, and audit log

See merge request mbugroup/lti-api!15

internal/database/migrations/20250925040409_create_master_tables.up.sql

@@ -316,7 +316,7 @@ CREATE TABLE stock_logs (
     before_quantity NUMERIC(15, 3) NOT NULL,
     after_quantity NUMERIC(15, 3) NOT NULL,
     log_type VARCHAR(50) NOT NULL,
-    log_id BIGINT ,
+    log_id BIGINT,
     note TEXT,
     product_warehouse_id BIGINT NOT NULL REFERENCES product_warehouses (id) ON DELETE CASCADE ON UPDATE CASCADE,
     created_by BIGINT NOT NULL REFERENCES users (id) ON DELETE SET NULL ON UPDATE CASCADE,

internal/database/migrations/20251014024355_create_stock_transfers.down.sql

@@ -0,0 +1,4 @@
+-- DROP TABLE: STOCK_TRANSFERS DAN SEQUENCE-NYA
+DROP TABLE IF EXISTS stock_transfers CASCADE;
+
+DROP SEQUENCE IF EXISTS stock_transfer_seq CASCADE;

internal/database/migrations/20251014024355_create_stock_transfers.up.sql

@@ -0,0 +1,57 @@
+-- ===============================================================
+--  STOCK TRANSFERS (HEADER)
+-- ===============================================================
+
+CREATE SEQUENCE IF NOT EXISTS stock_transfer_seq START 1;
+
+CREATE TABLE IF NOT EXISTS stock_transfers (
+    id BIGSERIAL PRIMARY KEY,
+    movement_number VARCHAR(50) UNIQUE NOT NULL,
+    from_warehouse_id BIGINT NOT NULL,
+    to_warehouse_id BIGINT NOT NULL,
+    area_id BIGINT,
+    reason TEXT,
+    transfer_date DATE NOT NULL,
+    created_by BIGINT,
+    created_at TIMESTAMPTZ DEFAULT NOW(),
+    updated_at TIMESTAMPTZ DEFAULT NOW(),
+    deleted_at TIMESTAMPTZ
+);
+
+-- FOREIGN KEYS (dijalankan setelah semua tabel parent ada)
+DO $$
+BEGIN
+    IF EXISTS (SELECT 1 FROM pg_tables WHERE tablename = 'warehouses') THEN
+        ALTER TABLE stock_transfers
+            ADD CONSTRAINT fk_stock_transfers_from_warehouse
+            FOREIGN KEY (from_warehouse_id)
+            REFERENCES warehouses(id)
+            ON DELETE RESTRICT ON UPDATE CASCADE;
+        ALTER TABLE stock_transfers
+            ADD CONSTRAINT fk_stock_transfers_to_warehouse
+            FOREIGN KEY (to_warehouse_id)
+            REFERENCES warehouses(id)
+            ON DELETE RESTRICT ON UPDATE CASCADE;
+    END IF;
+
+    IF EXISTS (SELECT 1 FROM pg_tables WHERE tablename = 'areas') THEN
+        ALTER TABLE stock_transfers
+            ADD CONSTRAINT fk_stock_transfers_area
+            FOREIGN KEY (area_id)
+            REFERENCES areas(id)
+            ON DELETE SET NULL ON UPDATE CASCADE;
+    END IF;
+
+    IF EXISTS (SELECT 1 FROM pg_tables WHERE tablename = 'users') THEN
+        ALTER TABLE stock_transfers
+            ADD CONSTRAINT fk_stock_transfers_created_by
+            FOREIGN KEY (created_by)
+            REFERENCES users(id)
+            ON DELETE SET NULL ON UPDATE CASCADE;
+    END IF;
+END $$;
+
+-- INDEXES
+CREATE INDEX IF NOT EXISTS idx_stock_transfers_from_warehouse_id ON stock_transfers(from_warehouse_id);
+CREATE INDEX IF NOT EXISTS idx_stock_transfers_to_warehouse_id   ON stock_transfers(to_warehouse_id);
+CREATE INDEX IF NOT EXISTS idx_stock_transfers_transfer_date     ON stock_transfers(transfer_date);

internal/database/migrations/20251014024642_create_stock_transfer_details.down.sql

@@ -0,0 +1,2 @@
+-- DROP TABLE: STOCK_TRANSFER_DETAILS
+DROP TABLE IF EXISTS stock_transfer_details CASCADE;

internal/database/migrations/20251014024642_create_stock_transfer_details.up.sql

@@ -0,0 +1,48 @@
+-- ===============================================================
+--  STOCK TRANSFER DETAILS (PRODUK)
+-- ===============================================================
+
+CREATE TABLE IF NOT EXISTS stock_transfer_details (
+    id BIGSERIAL PRIMARY KEY,
+    stock_transfer_id BIGINT NOT NULL,
+    product_id BIGINT NOT NULL,
+    quantity NUMERIC(15, 3) NOT NULL CHECK (quantity > 0),
+    before_quantity NUMERIC(15, 3),
+    after_quantity NUMERIC(15, 3),
+    created_at TIMESTAMPTZ DEFAULT NOW(),
+    updated_at TIMESTAMPTZ DEFAULT NOW(),
+    deleted_at TIMESTAMPTZ
+);
+
+-- ===============================================================
+--  FOREIGN KEYS (dengan pengecekan tabel agar anti gagal)
+-- ===============================================================
+
+DO $$
+BEGIN
+    IF EXISTS (SELECT 1 FROM pg_tables WHERE tablename = 'stock_transfers') THEN
+        EXECUTE
+        'ALTER TABLE stock_transfer_details
+         ADD CONSTRAINT fk_stock_transfer_details_transfer
+         FOREIGN KEY (stock_transfer_id)
+         REFERENCES stock_transfers(id)
+         ON DELETE CASCADE ON UPDATE CASCADE';
+    END IF;
+
+    IF EXISTS (SELECT 1 FROM pg_tables WHERE tablename = 'products') THEN
+        EXECUTE
+        'ALTER TABLE stock_transfer_details
+         ADD CONSTRAINT fk_stock_transfer_details_product
+         FOREIGN KEY (product_id)
+         REFERENCES products(id)
+         ON DELETE RESTRICT ON UPDATE CASCADE';
+    END IF;
+END $$;
+
+-- ===============================================================
+--  INDEXES
+-- ===============================================================
+
+CREATE INDEX IF NOT EXISTS idx_stock_transfer_details_transfer_id ON stock_transfer_details (stock_transfer_id);
+
+CREATE INDEX IF NOT EXISTS idx_stock_transfer_details_product_id ON stock_transfer_details (product_id);

internal/database/migrations/20251014024656_create_stock_transfer_deliveries.down.sql

@@ -0,0 +1,2 @@
+-- DROP TABLE: STOCK_TRANSFER_DELIVERIES
+DROP TABLE IF EXISTS stock_transfer_deliveries CASCADE;

internal/database/migrations/20251014024656_create_stock_transfer_deliveries.up.sql

@@ -0,0 +1,42 @@
+-- ===============================================================
+--  STOCK TRANSFER DELIVERIES (EKSPEDISI)
+-- ===============================================================
+
+CREATE TABLE IF NOT EXISTS stock_transfer_deliveries (
+    id BIGSERIAL PRIMARY KEY,
+    stock_transfer_id BIGINT NOT NULL,
+    supplier_id BIGINT,
+    vehicle_plate VARCHAR(20),
+    driver_name VARCHAR(100),
+    document_number VARCHAR(50),
+    document_path TEXT,
+    shipping_cost_item NUMERIC(15,3),
+    shipping_cost_total NUMERIC(15,3),
+    created_at TIMESTAMPTZ DEFAULT NOW(),
+    updated_at TIMESTAMPTZ DEFAULT NOW(),
+    deleted_at TIMESTAMPTZ
+);
+
+-- FOREIGN KEYS
+DO $$
+BEGIN
+    IF EXISTS (SELECT 1 FROM pg_tables WHERE tablename = 'stock_transfers') THEN
+        ALTER TABLE stock_transfer_deliveries
+            ADD CONSTRAINT fk_stock_transfer_deliveries_transfer
+            FOREIGN KEY (stock_transfer_id)
+            REFERENCES stock_transfers(id)
+            ON DELETE CASCADE ON UPDATE CASCADE;
+    END IF;
+
+    IF EXISTS (SELECT 1 FROM pg_tables WHERE tablename = 'suppliers') THEN
+        ALTER TABLE stock_transfer_deliveries
+            ADD CONSTRAINT fk_stock_transfer_deliveries_supplier
+            FOREIGN KEY (supplier_id)
+            REFERENCES suppliers(id)
+            ON DELETE SET NULL ON UPDATE CASCADE;
+    END IF;
+END $$;
+
+-- INDEXES
+CREATE INDEX IF NOT EXISTS idx_stock_transfer_deliveries_transfer_id ON stock_transfer_deliveries(stock_transfer_id);
+CREATE INDEX IF NOT EXISTS idx_stock_transfer_deliveries_supplier_id ON stock_transfer_deliveries(supplier_id);

internal/database/migrations/20251014024702_create_stock_transfer_delivery_items.down.sql

@@ -0,0 +1,2 @@
+-- DROP PIVOT TABLE: STOCK_TRANSFER_DELIVERY_ITEMS
+DROP TABLE IF EXISTS stock_transfer_delivery_items CASCADE;

internal/database/migrations/20251014024702_create_stock_transfer_delivery_items.up.sql

@@ -0,0 +1,35 @@
+-- ===============================================================
+--  STOCK TRANSFER DELIVERY ITEMS (PIVOT)
+-- ===============================================================
+
+CREATE TABLE IF NOT EXISTS stock_transfer_delivery_items (
+    id BIGSERIAL PRIMARY KEY,
+    stock_transfer_delivery_id BIGINT NOT NULL,
+    stock_transfer_detail_id BIGINT NOT NULL,
+    quantity NUMERIC(15, 3) NOT NULL CHECK (quantity > 0)
+);
+
+-- FOREIGN KEYS
+DO $$
+BEGIN
+    IF EXISTS (SELECT 1 FROM pg_tables WHERE tablename = 'stock_transfer_deliveries') THEN
+        ALTER TABLE stock_transfer_delivery_items
+            ADD CONSTRAINT fk_delivery_items_delivery
+            FOREIGN KEY (stock_transfer_delivery_id)
+            REFERENCES stock_transfer_deliveries(id)
+            ON DELETE CASCADE ON UPDATE CASCADE;
+    END IF;
+
+    IF EXISTS (SELECT 1 FROM pg_tables WHERE tablename = 'stock_transfer_details') THEN
+        ALTER TABLE stock_transfer_delivery_items
+            ADD CONSTRAINT fk_delivery_items_detail
+            FOREIGN KEY (stock_transfer_detail_id)
+            REFERENCES stock_transfer_details(id)
+            ON DELETE CASCADE ON UPDATE CASCADE;
+    END IF;
+END $$;
+
+-- INDEXES
+CREATE INDEX IF NOT EXISTS idx_stock_transfer_delivery_items_delivery_id ON stock_transfer_delivery_items (stock_transfer_delivery_id);
+
+CREATE INDEX IF NOT EXISTS idx_stock_transfer_delivery_items_detail_id ON stock_transfer_delivery_items (stock_transfer_detail_id);

internal/database/seed/seeder.go

@@ -78,6 +78,10 @@ func Run(db *gorm.DB) error {
 			return err
 		}
 
+		if err := seedTransferStock(tx, adminID); err != nil {
+			return err
+		}
+
 		fmt.Println("✅ Master data seeding completed")
 		return nil
 	})
@@ -775,7 +779,7 @@ func seedProductWarehouse(tx *gorm.DB, createdBy uint) error {
 	}{
 		{ProductID: 1, WarehouseID: 1, Quantity: 100},
 		{ProductID: 2, WarehouseID: 2, Quantity: 200},
-		{ProductID: 1, WarehouseID: 1, Quantity: 300},
+		{ProductID: 2, WarehouseID: 1, Quantity: 300},
 	}
 
 	for _, seed := range seeds {
@@ -799,6 +803,84 @@ func seedProductWarehouse(tx *gorm.DB, createdBy uint) error {
 	return nil
 }
 
+func seedTransferStock(tx *gorm.DB, createdBy uint) error {
+	// Seeder Transfer Stock
+	// 1. Insert StockTransfer (header)
+	transfer := entity.StockTransfer{
+		FromWarehouseId: 1,
+		ToWarehouseId:   2,
+		Reason:          "Seed transfer stock",
+		TransferDate:    time.Now(),
+		MovementNumber:  "SEED-TRF-00001",
+		CreatedBy:       1,
+	}
+	if err := tx.Create(&transfer).Error; err != nil {
+		return err
+	}
+
+	// 2. Insert StockTransferDetail (detail)
+	details := []entity.StockTransferDetail{
+		{
+			StockTransferId: transfer.Id,
+			ProductId:       1,
+			Quantity:        10,
+		},
+		{
+			StockTransferId: transfer.Id,
+			ProductId:       2,
+			Quantity:        5,
+		},
+	}
+	for i := range details {
+		if err := tx.Create(&details[i]).Error; err != nil {
+			return err
+		}
+	}
+
+	// 3. Insert StockTransferDelivery (delivery)
+	deliveries := []entity.StockTransferDelivery{
+		{
+			StockTransferId:   transfer.Id,
+			SupplierId:        1,
+			VehiclePlate:      "B 1234 XYZ",
+			DriverName:        "Driver Seed",
+			DocumentPath:      "seed.pdf",
+			ShippingCostItem:  1000,
+			ShippingCostTotal: 2000,
+		},
+	}
+	for i := range deliveries {
+		if err := tx.Create(&deliveries[i]).Error; err != nil {
+			return err
+		}
+	}
+
+	detailMap := make(map[uint64]uint64)
+	for _, d := range details {
+		detailMap[d.ProductId] = d.Id
+	}
+
+	deliveryItems := []entity.StockTransferDeliveryItem{
+		{
+			StockTransferDeliveryId: deliveries[0].Id,
+			StockTransferDetailId:   detailMap[1],
+			Quantity:                50,
+		},
+		{
+			StockTransferDeliveryId: deliveries[0].Id,
+			StockTransferDetailId:   detailMap[2],
+			Quantity:                30,
+		},
+	}
+	for i := range deliveryItems {
+		if err := tx.Create(&deliveryItems[i]).Error; err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
 func ptr[T any](v T) *T {
 	return &v
 }

internal/entities/stock-transfer.go

@@ -0,0 +1,23 @@
+package entities
+
+import "time"
+
+// HEADER
+type StockTransfer struct {
+	Id              uint64 `gorm:"primaryKey;autoIncrement"`
+	MovementNumber  string `gorm:"uniqueIndex;not null"`
+	FromWarehouseId uint64
+	ToWarehouseId   uint64
+	TransferDate    time.Time
+	Reason          string
+	CreatedBy       uint64
+	CreatedAt       time.Time
+	UpdatedAt       time.Time
+	DeletedAt       *time.Time `gorm:"index"`
+	// Relations
+	FromWarehouse *Warehouse              `gorm:"foreignKey:FromWarehouseId"`
+	ToWarehouse   *Warehouse              `gorm:"foreignKey:ToWarehouseId"`
+	Details       []StockTransferDetail   `gorm:"foreignKey:StockTransferId"`
+	Deliveries    []StockTransferDelivery `gorm:"foreignKey:StockTransferId"`
+	CreatedUser   *User                   `gorm:"foreignKey:CreatedBy"`
+}

internal/entities/stock_transfer_delivery.go

@@ -0,0 +1,23 @@
+package entities
+
+import "time"
+
+// DETAIL EKSPEDISI
+type StockTransferDelivery struct {
+    Id                uint64                      `gorm:"primaryKey;autoIncrement"`
+    StockTransferId   uint64
+    SupplierId        uint64
+    VehiclePlate      string
+    DriverName        string
+    DocumentNumber    string
+    DocumentPath      string
+    ShippingCostItem  float64
+    ShippingCostTotal float64
+    CreatedAt         time.Time
+    UpdatedAt         time.Time
+    DeletedAt         *time.Time                  `gorm:"index"`
+    // Relations
+    StockTransfer     *StockTransfer              `gorm:"foreignKey:StockTransferId"`
+    Supplier          *Supplier                   `gorm:"foreignKey:SupplierId"`
+    Items             []StockTransferDeliveryItem `gorm:"foreignKey:StockTransferDeliveryId"`
+}

internal/entities/stock_transfer_delivery_item.go

@@ -0,0 +1,12 @@
+package entities
+
+// PIVOT TABLE TRANSFER
+type StockTransferDeliveryItem struct {
+	Id                      uint64 `gorm:"primaryKey;autoIncrement"`
+	StockTransferDeliveryId uint64
+	StockTransferDetailId   uint64
+	Quantity                float64
+	// Relations
+	StockTransferDelivery *StockTransferDelivery `gorm:"foreignKey:StockTransferDeliveryId"`
+	StockTransferDetail   *StockTransferDetail   `gorm:"foreignKey:StockTransferDetailId"`
+}

internal/entities/stock_transfer_detail.go

@@ -0,0 +1,18 @@
+package entities
+
+import "time"
+
+// DETAIL PRODUK
+type StockTransferDetail struct {
+	Id              uint64 `gorm:"primaryKey;autoIncrement"`
+	StockTransferId uint64
+	ProductId       uint64
+	Quantity        float64
+	CreatedAt       time.Time
+	UpdatedAt       time.Time
+	DeletedAt       *time.Time `gorm:"index"`
+	// Relations
+	StockTransfer *StockTransfer              `gorm:"foreignKey:StockTransferId"`
+	Product       *Product                    `gorm:"foreignKey:ProductId"`
+	DeliveryItems []StockTransferDeliveryItem `gorm:"foreignKey:StockTransferDetailId"`
+}

internal/modules/inventory/adjustments/controllers/adjustment.controller.go

@@ -2,6 +2,7 @@ package controller
 
 import (
 	"math"
+	"strconv"
 
 	"gitlab.com/mbugroup/lti-api.git/internal/modules/inventory/adjustments/dto"
 	service "gitlab.com/mbugroup/lti-api.git/internal/modules/inventory/adjustments/services"
@@ -78,3 +79,25 @@ func (u *AdjustmentController) AdjustmentHistory(c *fiber.Ctx) error {
 			Data: adjustmentDTOs,
 		})
 }
+
+func (u *AdjustmentController) GetOne(c *fiber.Ctx) error {
+	param := c.Params("id")
+
+	id, err := strconv.Atoi(param)
+	if err != nil {
+		return fiber.NewError(fiber.StatusBadRequest, "Invalid Id")
+	}
+
+	stockLog, err := u.AdjustmentService.GetOne(c, uint(id))
+	if err != nil {
+		return err
+	}
+	// Use DTO for response
+	return c.Status(fiber.StatusOK).
+		JSON(response.Success{
+			Code:    fiber.StatusOK,
+			Status:  "success",
+			Message: "Get adjustment successfully",
+			Data:    dto.ToAdjustmentDetailDTO(stockLog),
+		})
+}

internal/modules/inventory/adjustments/dto/adjustment.dto.go

@@ -4,15 +4,17 @@ import (
 	"time"
 
 	entity "gitlab.com/mbugroup/lti-api.git/internal/entities"
+	productCategoryDTO "gitlab.com/mbugroup/lti-api.git/internal/modules/master/product-categories/dto"
 	userDTO "gitlab.com/mbugroup/lti-api.git/internal/modules/users/dto"
 )
 
 // === DTO Structs ===
 
 type ProductBaseDTO struct {
-	Id   uint   `json:"id"`
+	Id              uint                                       `json:"id"`
-	Name string `json:"name"`
+	Name            string                                     `json:"name"`
-	SKU  string `json:"sku"`
+	SKU             string                                     `json:"sku"`
+	ProductCategory *productCategoryDTO.ProductCategoryBaseDTO `json:"product_category,omitempty"`
 }
 
 type WarehouseBaseDTO struct {
@@ -61,10 +63,18 @@ func ToProductBaseDTO(e *entity.Product) *ProductBaseDTO {
 	if e.Sku != nil {
 		sku = *e.Sku
 	}
+
+	var category *productCategoryDTO.ProductCategoryBaseDTO
+	if e.ProductCategory.Id != 0 {
+		mapped := productCategoryDTO.ToProductCategoryBaseDTO(e.ProductCategory)
+		category = &mapped
+	}
+
 	return &ProductBaseDTO{
-		Id:   e.Id,
+		Id:              e.Id,
-		Name: e.Name,
+		Name:            e.Name,
-		SKU:  sku,
+		SKU:             sku,
+		ProductCategory: category,
 	}
 }
 

internal/modules/inventory/adjustments/module.go

@@ -7,6 +7,7 @@ import (
 
 	sAdjustment "gitlab.com/mbugroup/lti-api.git/internal/modules/inventory/adjustments/services"
 	rProductWarehouse "gitlab.com/mbugroup/lti-api.git/internal/modules/inventory/product-warehouses/repositories"
+	rproduct "gitlab.com/mbugroup/lti-api.git/internal/modules/master/products/repositories"
 	rWarehouse "gitlab.com/mbugroup/lti-api.git/internal/modules/master/warehouses/repositories"
 	rStockLogs "gitlab.com/mbugroup/lti-api.git/internal/modules/shared/stock-logs/repositories"
 
@@ -21,8 +22,9 @@ func (AdjustmentModule) RegisterRoutes(router fiber.Router, db *gorm.DB, validat
 	warehouseRepo := rWarehouse.NewWarehouseRepository(db)
 	productWarehouseRepo := rProductWarehouse.NewProductWarehouseRepository(db)
 	userRepo := rUser.NewUserRepository(db)
+	productRepo := rproduct.NewProductRepository(db)
 
-	adjustmentService := sAdjustment.NewAdjustmentService(stockLogsRepo, warehouseRepo, productWarehouseRepo, validate)
+	adjustmentService := sAdjustment.NewAdjustmentService(productRepo, stockLogsRepo, warehouseRepo, productWarehouseRepo, validate)
 	userService := sUser.NewUserService(userRepo, validate)
 
 	AdjustmentRoutes(router, userService, adjustmentService)

internal/modules/inventory/adjustments/route.go

@@ -17,5 +17,6 @@ func AdjustmentRoutes(v1 fiber.Router, u user.UserService, s adjustment.Adjustme
 	// Standard CRUD routes following master data pattern
 	route.Get("/", ctrl.AdjustmentHistory) // Get all with pagination and filters
 	route.Post("/", ctrl.Adjustment)       // Create adjustment
+	route.Get("/:id", ctrl.GetOne)
 
 }

internal/modules/inventory/adjustments/services/adjustment.service.go

@@ -7,6 +7,7 @@ import (
 	entity "gitlab.com/mbugroup/lti-api.git/internal/entities"
 	validation "gitlab.com/mbugroup/lti-api.git/internal/modules/inventory/adjustments/validations"
 	ProductWarehouse "gitlab.com/mbugroup/lti-api.git/internal/modules/inventory/product-warehouses/repositories"
+	productRepo "gitlab.com/mbugroup/lti-api.git/internal/modules/master/products/repositories"
 	warehouseRepo "gitlab.com/mbugroup/lti-api.git/internal/modules/master/warehouses/repositories"
 	stockLogsRepo "gitlab.com/mbugroup/lti-api.git/internal/modules/shared/stock-logs/repositories"
 	"gitlab.com/mbugroup/lti-api.git/internal/utils"
@@ -29,15 +30,17 @@ type adjustmentService struct {
 	StockLogsRepository  stockLogsRepo.StockLogRepository
 	WarehouseRepo        warehouseRepo.WarehouseRepository
 	ProductWarehouseRepo ProductWarehouse.ProductWarehouseRepository
+	ProductRepo          productRepo.ProductRepository
 }
 
-func NewAdjustmentService(stockLogsRepo stockLogsRepo.StockLogRepository, warehouseRepo warehouseRepo.WarehouseRepository, productWarehouseRepo ProductWarehouse.ProductWarehouseRepository, validate *validator.Validate) AdjustmentService {
+func NewAdjustmentService(productRepo productRepo.ProductRepository, stockLogsRepo stockLogsRepo.StockLogRepository, warehouseRepo warehouseRepo.WarehouseRepository, productWarehouseRepo ProductWarehouse.ProductWarehouseRepository, validate *validator.Validate) AdjustmentService {
 	return &adjustmentService{
 		Log:                  utils.Log,
 		Validate:             validate,
 		StockLogsRepository:  stockLogsRepo,
 		WarehouseRepo:        warehouseRepo,
 		ProductWarehouseRepo: productWarehouseRepo,
+		ProductRepo:          productRepo,
 	}
 }
 
@@ -50,7 +53,9 @@ func (s *adjustmentService) withRelations(db *gorm.DB) *gorm.DB {
 }
 
 func (s *adjustmentService) GetOne(c *fiber.Ctx, id uint) (*entity.StockLog, error) {
-	stockLog, err := s.StockLogsRepository.GetByID(c.Context(), id, s.withRelations)
+	stockLog, err := s.StockLogsRepository.GetByID(c.Context(), id, func(db *gorm.DB) *gorm.DB {
+		return s.withRelations(db).Preload("ProductWarehouse.Product.ProductCategory")
+	})
 	if err != nil {
 		if errors.Is(err, gorm.ErrRecordNotFound) {
 			return nil, fiber.NewError(fiber.StatusNotFound, "Adjustment not found")
@@ -72,14 +77,27 @@ func (s *adjustmentService) Adjustment(c *fiber.Ctx, req *validation.Create) (*e
 	}
 	ctx := c.Context()
 
-	productWarehouseExists, err := s.ProductWarehouseRepo.ProductWarehouseExists(ctx, uint(req.ProductID), uint(req.WarehouseID), nil)
+	isProductExist, err := s.ProductRepo.IdExists(c.Context(), uint(req.ProductID))
 	if err != nil {
-		return nil, err
+		s.Log.Errorf("Failed to check product existence: %+v", err)
+		return nil, fiber.NewError(fiber.StatusInternalServerError, "Failed to validate product")
 	}
-	if !productWarehouseExists {
+	if !isProductExist {
-		return nil, fiber.NewError(fiber.StatusBadRequest, "Product warehouse not found")
+		return nil, fiber.NewError(fiber.StatusBadRequest, "Product not found")
 	}
 
+	isWarehouseExist, err := s.WarehouseRepo.IdExists(c.Context(), uint(req.WarehouseID))
+	if err != nil {
+		s.Log.Errorf("Failed to check warehouse existence: %+v", err)
+		return nil, fiber.NewError(fiber.StatusInternalServerError, "Failed to validate warehouse")
+	}
+	if !isWarehouseExist {
+		return nil, fiber.NewError(fiber.StatusBadRequest, "Warehouse not found")
+	}
+
+	if req.Quantity <= 0 {
+		return nil, fiber.NewError(fiber.StatusBadRequest, "Quantity must be greater than zero")
+	}
 	transactionType := strings.ToUpper(req.TransactionType)
 	if transactionType != entity.TransactionTypeIncrease && transactionType != entity.TransactionTypeDecrease {
 		return nil, fiber.NewError(fiber.StatusBadRequest, "Invalid transaction type")
@@ -87,16 +105,33 @@ func (s *adjustmentService) Adjustment(c *fiber.Ctx, req *validation.Create) (*e
 
 	var createdLogId uint
 
+	isProductWarehouseExist, err := s.ProductWarehouseRepo.ProductWarehouseExistByProductAndWarehouseID(ctx, uint(req.ProductID), uint(req.WarehouseID))
+	if err != nil {
+		s.Log.Errorf("Failed to check product warehouse existence: %+v", err)
+		return nil, fiber.NewError(fiber.StatusInternalServerError, "Failed to validate product warehouse")
+	}
+	if !isProductWarehouseExist {
+
+		newPW := &entity.ProductWarehouse{
+			ProductId:   uint(req.ProductID),
+			WarehouseId: uint(req.WarehouseID),
+			Quantity:    0,
+			CreatedBy:   1, // TODO: should Get from auth middleware
+		}
+		if err := s.ProductWarehouseRepo.CreateOne(ctx, newPW, nil); err != nil {
+			s.Log.Errorf("Failed to create product warehouse: %+v", err)
+			return nil, fiber.NewError(fiber.StatusInternalServerError, "Failed to create product warehouse")
+		}
+		s.Log.Infof("Product warehouse created: %+v", newPW.Id)
+	}
+
 	err = s.StockLogsRepository.DB().WithContext(ctx).Transaction(func(tx *gorm.DB) error {
-		// Get product warehouse by product id and warehouse id (read operation, no transaction needed)
+
 		productWarehouse, err := s.ProductWarehouseRepo.GetProductWarehouseByProductAndWarehouseID(ctx, uint(req.ProductID), uint(req.WarehouseID))
 		if err != nil {
-			return err
+			s.Log.Errorf("Failed to get product warehouse: %+v", err)
+			return fiber.NewError(fiber.StatusInternalServerError, "Failed to get product warehouse")
 		}
-		if productWarehouse == nil {
-			return fiber.NewError(fiber.StatusBadRequest, "Product warehouse not found")
-		}
-		s.Log.Infof("Product Warehouse found: %+v", productWarehouse.Id)
 
 		afterQuantity := productWarehouse.Quantity
 		if transactionType == entity.TransactionTypeIncrease {
@@ -133,7 +168,6 @@ func (s *adjustmentService) Adjustment(c *fiber.Ctx, req *validation.Create) (*e
 		}
 		s.Log.Infof("Product warehouse quantity updated: %+v", productWarehouse.Id)
 
-		// Set createdLogId to get the log with relations after transaction
 		createdLogId = newLog.Id
 		return nil
 	})

internal/modules/inventory/product-warehouses/controllers/product_warehouse.controller.go

@@ -72,70 +72,4 @@ func (u *ProductWarehouseController) GetOne(c *fiber.Ctx) error {
 		})
 }
 
-func (u *ProductWarehouseController) CreateOne(c *fiber.Ctx) error {
-	req := new(validation.Create)
 
-	if err := c.BodyParser(req); err != nil {
-		return fiber.NewError(fiber.StatusBadRequest, "Invalid request body")
-	}
-
-	result, err := u.ProductWarehouseService.CreateOne(c, req)
-	if err != nil {
-		return err
-	}
-
-	return c.Status(fiber.StatusCreated).
-		JSON(response.Success{
-			Code:    fiber.StatusCreated,
-			Status:  "success",
-			Message: "Create productWarehouse successfully",
-			Data:    dto.ToProductWarehouseListDTO(*result),
-		})
-}
-
-func (u *ProductWarehouseController) UpdateOne(c *fiber.Ctx) error {
-	req := new(validation.Update)
-	param := c.Params("id")
-
-	id, err := strconv.Atoi(param)
-	if err != nil {
-		return fiber.NewError(fiber.StatusBadRequest, "Invalid Id")
-	}
-
-	if err := c.BodyParser(req); err != nil {
-		return fiber.NewError(fiber.StatusBadRequest, "Invalid request body")
-	}
-
-	result, err := u.ProductWarehouseService.UpdateOne(c, req, uint(id))
-	if err != nil {
-		return err
-	}
-
-	return c.Status(fiber.StatusOK).
-		JSON(response.Success{
-			Code:    fiber.StatusOK,
-			Status:  "success",
-			Message: "Update productWarehouse successfully",
-			Data:    dto.ToProductWarehouseListDTO(*result),
-		})
-}
-
-func (u *ProductWarehouseController) DeleteOne(c *fiber.Ctx) error {
-	param := c.Params("id")
-
-	id, err := strconv.Atoi(param)
-	if err != nil {
-		return fiber.NewError(fiber.StatusBadRequest, "Invalid Id")
-	}
-
-	if err := u.ProductWarehouseService.DeleteOne(c, uint(id)); err != nil {
-		return err
-	}
-
-	return c.Status(fiber.StatusOK).
-		JSON(response.Common{
-			Code:    fiber.StatusOK,
-			Status:  "success",
-			Message: "Delete productWarehouse successfully",
-		})
-}

internal/modules/inventory/product-warehouses/dto/product_warehouse.dto.go

@@ -10,10 +10,10 @@ import (
 // === DTO Structs ===
 
 type ProductWarehouseBaseDTO struct {
-	Id          uint `json:"id"`
+	Id          uint    `json:"id"`
-	ProductId   uint `json:"product_id"`
+	ProductId   uint    `json:"product_id"`
-	WarehouseId uint `json:"warehouse_id"`
+	WarehouseId uint    `json:"warehouse_id"`
-	Quantity    float64  `json:"quantity"`
+	Quantity    float64 `json:"quantity"`
 }
 
 type ProductWarehouseListDTO struct {
@@ -31,9 +31,10 @@ type ProductWarehouseDetailDTO struct {
 
 // Nested DTOs for relations
 type ProductBaseDTO struct {
-	Id   uint   `json:"id"`
+	Id    uint     `json:"id"`
-	Name string `json:"name"`
+	Name  string   `json:"name"`
-	Sku  string `json:"sku"`
+	Sku   string   `json:"sku"`
+	Flags []string `json:"flags"`
 }
 
 type WarehouseBaseDTO struct {
@@ -68,6 +69,12 @@ func ToProductWarehouseListDTO(e entity.ProductWarehouse) ProductWarehouseListDT
 		if e.Product.Sku != nil {
 			product.Sku = *e.Product.Sku
 		}
+		// Map flags from Product relation
+		if len(e.Product.Flags) > 0 {
+			for _, f := range e.Product.Flags {
+				product.Flags = append(product.Flags, f.Name)
+			}
+		}
 		dto.Product = &product
 	}
 

internal/modules/inventory/product-warehouses/repositories/product_warehouse.repository.go

@@ -13,6 +13,7 @@ type ProductWarehouseRepository interface {
 	ProductWarehouseExists(ctx context.Context, productId, warehouseId uint, excludeID *uint) (bool, error)
 	IsProductExist(ctx context.Context, productId uint) (bool, error)
 	IsWarehouseExist(ctx context.Context, warehouseId uint) (bool, error)
+	ProductWarehouseExistByProductAndWarehouseID(ctx context.Context, productId, warehouseId uint) (bool, error)
 	ExistsByID(ctx context.Context, id uint) (bool, error)
 	GetProductWarehouseByProductAndWarehouseID(ctx context.Context, productId, warehouseId uint) (*entity.ProductWarehouse, error)
 }
@@ -53,6 +54,17 @@ func (r *ProductWarehouseRepositoryImpl) ExistsByID(ctx context.Context, id uint
 	return repository.Exists[entity.ProductWarehouse](ctx, r.db, id)
 }
 
+func (r *ProductWarehouseRepositoryImpl) ProductWarehouseExistByProductAndWarehouseID(ctx context.Context, productId, warehouseId uint) (bool, error) {
+	var count int64
+	if err := r.db.WithContext(ctx).
+		Model(&entity.ProductWarehouse{}).
+		Where("product_id = ? AND warehouse_id = ?", productId, warehouseId).
+		Count(&count).Error; err != nil {
+		return false, err
+	}
+	return count > 0, nil
+}
+
 func (r *ProductWarehouseRepositoryImpl) GetProductWarehouseByProductAndWarehouseID(ctx context.Context, productId, warehouseId uint) (*entity.ProductWarehouse, error) {
 	var productWarehouse entity.ProductWarehouse
 	if err := r.DB().WithContext(ctx).Where("product_id = ? AND warehouse_id = ?", productId, warehouseId).First(&productWarehouse).Error; err != nil {

internal/modules/inventory/product-warehouses/route.go

@@ -21,8 +21,6 @@ func ProductWarehouseRoutes(v1 fiber.Router, u user.UserService, s productWareho
 	// route.Delete("/:id", m.Auth(u), ctrl.DeleteOne)
 
 	route.Get("/", ctrl.GetAll)
-	route.Post("/", ctrl.CreateOne)
 	route.Get("/:id", ctrl.GetOne)
-	route.Patch("/:id", ctrl.UpdateOne)
+
-	route.Delete("/:id", ctrl.DeleteOne)
 }

internal/modules/inventory/product-warehouses/services/product_warehouse.service.go

@@ -17,9 +17,6 @@ import (
 type ProductWarehouseService interface {
 	GetAll(ctx *fiber.Ctx, params *validation.Query) ([]entity.ProductWarehouse, int64, error)
 	GetOne(ctx *fiber.Ctx, id uint) (*entity.ProductWarehouse, error)
-	CreateOne(ctx *fiber.Ctx, req *validation.Create) (*entity.ProductWarehouse, error)
-	UpdateOne(ctx *fiber.Ctx, req *validation.Update, id uint) (*entity.ProductWarehouse, error)
-	DeleteOne(ctx *fiber.Ctx, id uint) error
 }
 
 type productWarehouseService struct {
@@ -37,7 +34,7 @@ func NewProductWarehouseService(repo repository.ProductWarehouseRepository, vali
 }
 
 func (s productWarehouseService) withRelations(db *gorm.DB) *gorm.DB {
-	return db.Preload("Product").Preload("Warehouse").Preload("CreatedUser")
+	return db.Preload("Product.Flags").Preload("Product").Preload("Warehouse").Preload("CreatedUser")
 }
 
 func (s productWarehouseService) GetAll(c *fiber.Ctx, params *validation.Query) ([]entity.ProductWarehouse, int64, error) {
@@ -79,125 +76,3 @@ func (s productWarehouseService) GetOne(c *fiber.Ctx, id uint) (*entity.ProductW
 	}
 	return productWarehouse, nil
 }
-
-func (s *productWarehouseService) CreateOne(c *fiber.Ctx, req *validation.Create) (*entity.ProductWarehouse, error) {
-	if err := s.Validate.Struct(req); err != nil {
-		return nil, err
-	}
-
-	isProductExist, err := s.Repository.IsProductExist(c.Context(), req.ProductId)
-	if err != nil {
-		s.Log.Errorf("Failed to check product existence: %+v", err)
-		return nil, fiber.NewError(fiber.StatusInternalServerError, "Failed to check product existence")
-	}
-	if !isProductExist {
-		return nil, fiber.NewError(fiber.StatusBadRequest, "Product not found")
-	}
-
-	isWarehouseExist, err := s.Repository.IsWarehouseExist(c.Context(), req.WarehouseId)
-	if err != nil {
-		s.Log.Errorf("Failed to check warehouse existence: %+v", err)
-		return nil, fiber.NewError(fiber.StatusInternalServerError, "Failed to check warehouse existence")
-	}
-	if !isWarehouseExist {
-		return nil, fiber.NewError(fiber.StatusBadRequest, "Warehouse not found")
-	}
-
-	// chceking if productWarehouse with same product_id and warehouse_id already
-	exists, err := s.Repository.ProductWarehouseExists(c.Context(), req.ProductId, req.WarehouseId, nil)
-	if err != nil {
-		s.Log.Errorf("Failed to check productWarehouse existence: %+v", err)
-		return nil, fiber.NewError(fiber.StatusInternalServerError, "Failed to check productWarehouse existence")
-	}
-
-	if exists {
-		return nil, fiber.NewError(fiber.StatusConflict, "ProductWarehouse already exists")
-	}
-
-	createBody := &entity.ProductWarehouse{
-		ProductId:   req.ProductId,
-		WarehouseId: req.WarehouseId,
-		Quantity:    req.Quantity,
-		CreatedBy:   1, // TODO: Ganti dengan user ID dari context setelah middleware auth diimplementasi
-	}
-
-	if err := s.Repository.CreateOne(c.Context(), createBody, nil); err != nil {
-		s.Log.Errorf("Failed to create productWarehouse: %+v", err)
-		return nil, err
-	}
-
-	return s.GetOne(c, createBody.Id)
-}
-
-func (s productWarehouseService) UpdateOne(c *fiber.Ctx, req *validation.Update, id uint) (*entity.ProductWarehouse, error) {
-	if err := s.Validate.Struct(req); err != nil {
-		return nil, err
-	}
-
-	// validation Id exist
-	if exists, err := s.Repository.ExistsByID(c.Context(), id); err != nil {
-		s.Log.Errorf("Failed to check productWarehouse existence: %+v", err)
-		return nil, fiber.NewError(fiber.StatusInternalServerError, "Failed to check productWarehouse existence")
-	} else if !exists {
-		return nil, fiber.NewError(fiber.StatusNotFound, "ProductWarehouse not found")
-	}
-	// validation productId and warehouseId exist
-	if req.ProductId != nil {
-		isProductExist, err := s.Repository.IsProductExist(c.Context(), *req.ProductId)
-		if err != nil {
-			s.Log.Errorf("Failed to check product existence: %+v", err)
-			return nil, fiber.NewError(fiber.StatusInternalServerError, "Failed to check product existence")
-		}
-		if !isProductExist {
-			return nil, fiber.NewError(fiber.StatusBadRequest, "Product not found")
-		}
-	}
-
-	if req.WarehouseId != nil {
-		isWarehouseExist, err := s.Repository.IsWarehouseExist(c.Context(), *req.WarehouseId)
-		if err != nil {
-			s.Log.Errorf("Failed to check warehouse existence: %+v", err)
-			return nil, fiber.NewError(fiber.StatusInternalServerError, "Failed to check warehouse existence")
-		}
-		if !isWarehouseExist {
-			return nil, fiber.NewError(fiber.StatusNotFound, "Warehouse not found")
-		}
-	}
-
-	updateBody := make(map[string]any)
-
-	if req.ProductId != nil {
-		updateBody["product_id"] = *req.ProductId
-	}
-	if req.WarehouseId != nil {
-		updateBody["warehouse_id"] = *req.WarehouseId
-	}
-	if req.Quantity != nil {
-		updateBody["quantity"] = *req.Quantity
-	}
-
-	if len(updateBody) == 0 {
-		return s.GetOne(c, id)
-	}
-
-	if err := s.Repository.PatchOne(c.Context(), id, updateBody, nil); err != nil {
-		if errors.Is(err, gorm.ErrRecordNotFound) {
-			return nil, fiber.NewError(fiber.StatusNotFound, "ProductWarehouse not found")
-		}
-		s.Log.Errorf("Failed to update productWarehouse: %+v", err)
-		return nil, err
-	}
-
-	return s.GetOne(c, id)
-}
-
-func (s productWarehouseService) DeleteOne(c *fiber.Ctx, id uint) error {
-	if err := s.Repository.DeleteOne(c.Context(), id); err != nil {
-		if errors.Is(err, gorm.ErrRecordNotFound) {
-			return fiber.NewError(fiber.StatusNotFound, "ProductWarehouse not found")
-		}
-		s.Log.Errorf("Failed to delete productWarehouse: %+v", err)
-		return err
-	}
-	return nil
-}

internal/modules/inventory/route.go

@@ -9,6 +9,7 @@ import (
 
 	productWarehouses "gitlab.com/mbugroup/lti-api.git/internal/modules/inventory/product-warehouses"
 	adjustments "gitlab.com/mbugroup/lti-api.git/internal/modules/inventory/adjustments"
+	transfers "gitlab.com/mbugroup/lti-api.git/internal/modules/inventory/transfers"
 	// MODULE IMPORTS
 )
 
@@ -19,6 +20,7 @@ func RegisterRoutes(router fiber.Router, db *gorm.DB, validate *validator.Valida
 		productWarehouses.ProductWarehouseModule{},
 
 		adjustments.AdjustmentModule{},
+		transfers.TransferModule{},
 		// MODULE REGISTRY
 	}
 

internal/modules/inventory/transfers/controllers/transfer.controller.go

@@ -0,0 +1,103 @@
+package controller
+
+import (
+	"encoding/json"
+	"math"
+	"strconv"
+
+	"gitlab.com/mbugroup/lti-api.git/internal/modules/inventory/transfers/dto"
+	service "gitlab.com/mbugroup/lti-api.git/internal/modules/inventory/transfers/services"
+	validation "gitlab.com/mbugroup/lti-api.git/internal/modules/inventory/transfers/validations"
+	"gitlab.com/mbugroup/lti-api.git/internal/response"
+
+	"github.com/gofiber/fiber/v2"
+)
+
+type TransferController struct {
+	TransferService service.TransferService
+}
+
+func NewTransferController(transferService service.TransferService) *TransferController {
+	return &TransferController{
+		TransferService: transferService,
+	}
+}
+
+func (u *TransferController) GetAll(c *fiber.Ctx) error {
+	query := &validation.Query{
+		Page:   c.QueryInt("page", 1),
+		Limit:  c.QueryInt("limit", 10),
+		Search: c.Query("search", ""),
+	}
+
+	result, totalResults, err := u.TransferService.GetAll(c, query)
+	if err != nil {
+		return err
+	}
+
+	return c.Status(fiber.StatusOK).
+		JSON(response.SuccessWithPaginate[dto.TransferListDTO]{
+			Code:    fiber.StatusOK,
+			Status:  "success",
+			Message: "Get all transfers successfully",
+			Meta: response.Meta{
+				Page:         query.Page,
+				Limit:        query.Limit,
+				TotalPages:   int64(math.Ceil(float64(totalResults) / float64(query.Limit))),
+				TotalResults: totalResults,
+			},
+			Data: dto.ToTransferListDTOs(result),
+		})
+}
+
+func (u *TransferController) GetOne(c *fiber.Ctx) error {
+	param := c.Params("id")
+
+	id, err := strconv.Atoi(param)
+	if err != nil {
+		return fiber.NewError(fiber.StatusBadRequest, "Invalid Id")
+	}
+
+	result, err := u.TransferService.GetOne(c, uint(id))
+	if err != nil {
+		return err
+	}
+
+	return c.Status(fiber.StatusOK).
+		JSON(response.Success{
+			Code:    fiber.StatusOK,
+			Status:  "success",
+			Message: "Get transfer successfully",
+			Data:    dto.ToTransferListDTO(*result),
+		})
+}
+
+func (u *TransferController) CreateOne(c *fiber.Ctx) error {
+	data := c.FormValue("data")
+
+	var req validation.TransferRequest
+	if err := json.Unmarshal([]byte(data), &req); err != nil {
+		return fiber.NewError(fiber.StatusBadRequest, "Invalid request body")
+	}
+
+	// ambil file
+	form, err := c.MultipartForm()
+	if err != nil {
+		return fiber.NewError(fiber.StatusBadRequest, "Invalid multipart form")
+	}
+	_ = form.File["documents"]
+	// todo: tunggu ada aws baru proses
+
+	result, err := u.TransferService.CreateOne(c, &req)
+	if err != nil {
+		return err
+	}
+
+	return c.Status(fiber.StatusCreated).
+		JSON(response.Success{
+			Code:    fiber.StatusCreated,
+			Status:  "success",
+			Message: "Create transfer successfully",
+			Data:    dto.ToTransferListDTO(*result),
+		})
+}

internal/modules/inventory/transfers/dto/transfer.dto.go

@@ -0,0 +1,225 @@
+package dto
+
+import (
+	"time"
+
+	entity "gitlab.com/mbugroup/lti-api.git/internal/entities"
+	userDTO "gitlab.com/mbugroup/lti-api.git/internal/modules/users/dto"
+)
+
+// === DTO Structs ===
+
+type TransferBaseDTO struct {
+	Id                   uint64              `json:"id"`
+	TransferReason       string              `json:"transfer_reason"`
+	TransferDate         string              `json:"transfer_date"`
+	SourceWarehouse      *WarehouseDetailDTO `json:"source_warehouse,omitempty"`
+	DestinationWarehouse *WarehouseDetailDTO `json:"destination_warehouse,omitempty"`
+}
+
+// Only id and name for warehouse simple view
+type WarehouseSimpleDTO struct {
+	Id   uint   `json:"id"`
+	Name string `json:"name"`
+}
+
+type AreaDTO struct {
+	Id   uint   `json:"id"`
+	Name string `json:"name"`
+}
+
+type LocationDTO struct {
+	Id   uint   `json:"id"`
+	Name string `json:"name"`
+}
+
+type WarehouseDetailDTO struct {
+	Id       uint         `json:"id"`
+	Name     string       `json:"name"`
+	Location *LocationDTO `json:"location"`
+	Area     *AreaDTO     `json:"area"`
+}
+
+type TransferListDTO struct {
+	TransferBaseDTO
+	CreatedUser *userDTO.UserBaseDTO    `json:"created_user,omitempty"`
+	CreatedAt   time.Time               `json:"created_at"`
+	UpdatedAt   time.Time               `json:"updated_at"`
+	Details     []TransferDetailItemDTO `json:"details"`
+	Deliveries  []TransferDeliveryDTO   `json:"deliveries"`
+}
+
+type TransferDetailDTO struct {
+	TransferListDTO
+	Details    []TransferDetailItemDTO `json:"details"`
+	Deliveries []TransferDeliveryDTO   `json:"deliveries"`
+}
+
+// Detail produk
+type TransferDetailItemDTO struct {
+	Id             uint64  `json:"id"`
+	ProductId      uint64  `json:"product_id"`
+	Quantity       float64 `json:"quantity"`
+	BeforeQuantity float64 `json:"before_quantity"`
+	AfterQuantity  float64 `json:"after_quantity"`
+}
+
+// Delivery ekspedisi
+type TransferDeliveryDTO struct {
+	Id                uint64                    `json:"id"`
+	SupplierId        uint64                    `json:"supplier_id"`
+	VehiclePlate      string                    `json:"vehicle_plate"`
+	DriverName        string                    `json:"driver_name"`
+	DocumentNumber    string                    `json:"document_number"`
+	DocumentPath      string                    `json:"document_path"`
+	ShippingCostItem  float64                   `json:"shipping_cost_item"`
+	ShippingCostTotal float64                   `json:"shipping_cost_total"`
+	Items             []TransferDeliveryItemDTO `json:"items"`
+}
+
+type TransferDeliveryItemDTO struct {
+	Id                    uint64  `json:"id"`
+	StockTransferDetailId uint64  `json:"stock_transfer_detail_id"`
+	Quantity              float64 `json:"quantity"`
+}
+
+// === Mapper Functions ===
+
+func ToTransferBaseDTO(e entity.StockTransfer) TransferBaseDTO {
+
+	var sourceWarehouse *WarehouseDetailDTO
+	if e.FromWarehouse != nil && e.FromWarehouse.Id != 0 {
+		sourceWarehouse = toWarehouseDetailDTO(e.FromWarehouse)
+	}
+	var destinationWarehouse *WarehouseDetailDTO
+	if e.ToWarehouse != nil && e.ToWarehouse.Id != 0 {
+		destinationWarehouse = toWarehouseDetailDTO(e.ToWarehouse)
+	}
+	return TransferBaseDTO{
+		Id:                   e.Id,
+		TransferReason:       e.Reason,
+		TransferDate:         e.CreatedAt.Format("2006-01-02"),
+		SourceWarehouse:      sourceWarehouse,
+		DestinationWarehouse: destinationWarehouse,
+	}
+}
+
+func toAreaDTO(a *entity.Area) *AreaDTO {
+	if a == nil {
+		return nil
+	}
+	return &AreaDTO{
+		Id:   a.Id,
+		Name: a.Name,
+	}
+}
+
+func toLocationDTO(l *entity.Location) *LocationDTO {
+	if l == nil {
+		return nil
+	}
+	return &LocationDTO{
+		Id:   l.Id,
+		Name: l.Name,
+	}
+}
+
+func toWarehouseDetailDTO(w *entity.Warehouse) *WarehouseDetailDTO {
+	if w == nil {
+		return nil
+	}
+	return &WarehouseDetailDTO{
+		Id:       w.Id,
+		Name:     w.Name,
+		Location: toLocationDTO(w.Location),
+		Area:     toAreaDTO(&w.Area), // Ambil area langsung dari warehouse (area_id)
+	}
+}
+
+func ToTransferListDTO(e entity.StockTransfer) TransferListDTO {
+	var createdUser *userDTO.UserBaseDTO
+	if e.CreatedUser != nil {
+		mapped := userDTO.ToUserBaseDTO(*e.CreatedUser)
+		createdUser = &mapped
+	}
+	// Map details
+	var details []TransferDetailItemDTO
+	for _, d := range e.Details {
+		details = append(details, TransferDetailItemDTO{
+			Id:        d.Id,
+			ProductId: d.ProductId,
+			Quantity:  d.Quantity,
+		})
+	}
+	// Map deliveries
+	var deliveries []TransferDeliveryDTO
+	for _, del := range e.Deliveries {
+		// Map delivery items
+		var items []TransferDeliveryItemDTO
+		for _, item := range del.Items {
+			items = append(items, TransferDeliveryItemDTO{
+				Id:                    item.Id,
+				StockTransferDetailId: item.StockTransferDetailId,
+				Quantity:              item.Quantity,
+			})
+		}
+		deliveries = append(deliveries, TransferDeliveryDTO{
+			Id:                del.Id,
+			SupplierId:        del.SupplierId,
+			VehiclePlate:      del.VehiclePlate,
+			DriverName:        del.DriverName,
+			DocumentNumber:    del.DocumentNumber,
+			DocumentPath:      del.DocumentPath,
+			ShippingCostItem:  del.ShippingCostItem,
+			ShippingCostTotal: del.ShippingCostTotal,
+			Items:             items,
+		})
+	}
+	return TransferListDTO{
+		TransferBaseDTO: ToTransferBaseDTO(e),
+		CreatedUser:     createdUser,
+		CreatedAt:       e.CreatedAt,
+		UpdatedAt:       e.UpdatedAt,
+		Details:         details,
+		Deliveries:      deliveries,
+	}
+}
+
+func ToTransferListDTOs(e []entity.StockTransfer) []TransferListDTO {
+	result := make([]TransferListDTO, len(e))
+	for i, r := range e {
+		result[i] = ToTransferListDTO(r)
+	}
+	return result
+}
+
+func ToTransferDetailDTO(e entity.StockTransfer) TransferDetailDTO {
+	// Map details
+	var details []TransferDetailItemDTO
+	for _, d := range e.Details {
+		details = append(details, TransferDetailItemDTO{
+			Id:        d.Id,
+			ProductId: d.ProductId,
+			Quantity:  d.Quantity,
+		})
+	}
+	// Map deliveries
+	var deliveries []TransferDeliveryDTO
+	for _, del := range e.Deliveries {
+		deliveries = append(deliveries, TransferDeliveryDTO{
+			Id:                del.Id,
+			SupplierId:        del.SupplierId,
+			VehiclePlate:      del.VehiclePlate,
+			DriverName:        del.DriverName,
+			DocumentNumber:    del.DocumentNumber,
+			DocumentPath:      del.DocumentPath,
+			ShippingCostItem:  del.ShippingCostItem,
+			ShippingCostTotal: del.ShippingCostTotal,
+		})
+	}
+	return TransferDetailDTO{
+		TransferListDTO: ToTransferListDTO(e),
+		Details:         details,
+		Deliveries:      deliveries,
+	}
+}

internal/modules/inventory/transfers/module.go

@@ -0,0 +1,33 @@
+package transfers
+
+import (
+	"github.com/go-playground/validator/v10"
+	"github.com/gofiber/fiber/v2"
+	"gorm.io/gorm"
+
+	rProductWarehouse "gitlab.com/mbugroup/lti-api.git/internal/modules/inventory/product-warehouses/repositories"
+	rStockTransfer "gitlab.com/mbugroup/lti-api.git/internal/modules/inventory/transfers/repositories"
+	sTransfer "gitlab.com/mbugroup/lti-api.git/internal/modules/inventory/transfers/services"
+	rSupplier "gitlab.com/mbugroup/lti-api.git/internal/modules/master/suppliers/repositories"
+	rStockLogs "gitlab.com/mbugroup/lti-api.git/internal/modules/shared/stock-logs/repositories"
+	rUser "gitlab.com/mbugroup/lti-api.git/internal/modules/users/repositories"
+	sUser "gitlab.com/mbugroup/lti-api.git/internal/modules/users/services"
+)
+
+type TransferModule struct{}
+
+func (TransferModule) RegisterRoutes(router fiber.Router, db *gorm.DB, validate *validator.Validate) {
+	stockTransferRepo := rStockTransfer.NewStockTransferRepository(db)
+	stockTransferDetailRepo := rStockTransfer.NewStockTransferDetailRepository(db)
+	stockTransferDeliveryRepo := rStockTransfer.NewStockTransferDeliveryRepository(db)
+	StockTransferDeliveryItemRepo := rStockTransfer.NewStockTransferDeliveryItemRepository(db)
+	stockLogsRepo := rStockLogs.NewStockLogRepository(db)
+	supplierRepo := rSupplier.NewSupplierRepository(db)
+	productWarehouseRepo := rProductWarehouse.NewProductWarehouseRepository(db)
+	userRepo := rUser.NewUserRepository(db)
+
+	transferService := sTransfer.NewTransferService(validate, stockTransferRepo, stockTransferDetailRepo, stockTransferDeliveryRepo, StockTransferDeliveryItemRepo, stockLogsRepo, productWarehouseRepo, supplierRepo)
+	userService := sUser.NewUserService(userRepo, validate)
+
+	TransferRoutes(router, userService, transferService)
+}

internal/modules/inventory/transfers/repositories/stock_transfer.repository.go

@@ -0,0 +1,34 @@
+package repositories
+
+import (
+	"context"
+
+	"gitlab.com/mbugroup/lti-api.git/internal/common/repository"
+	entity "gitlab.com/mbugroup/lti-api.git/internal/entities"
+	"gorm.io/gorm"
+)
+
+type StockTransferRepository interface {
+	repository.BaseRepository[entity.StockTransfer]
+	// get sequence for movement number
+	GetNextMovementNumber(ctx context.Context) (int64, error)
+}
+
+type StockTransferRepositoryImpl struct {
+	*repository.BaseRepositoryImpl[entity.StockTransfer]
+}
+
+func NewStockTransferRepository(db *gorm.DB) StockTransferRepository {
+	return &StockTransferRepositoryImpl{
+		BaseRepositoryImpl: repository.NewBaseRepository[entity.StockTransfer](db),
+	}
+}
+
+func (r *StockTransferRepositoryImpl) GetNextMovementNumber(ctx context.Context) (int64, error) {
+	var seq int64
+	err := r.DB().WithContext(ctx).Raw("SELECT nextval('stock_transfer_seq')").Scan(&seq).Error
+	if err != nil {
+		return 0, err
+	}
+	return seq, nil
+}

internal/modules/inventory/transfers/repositories/stock_transfer_delivery.repository.go

@@ -0,0 +1,22 @@
+package repositories
+
+import (
+	"gitlab.com/mbugroup/lti-api.git/internal/common/repository"
+	entity "gitlab.com/mbugroup/lti-api.git/internal/entities"
+	"gorm.io/gorm"
+)
+
+type StockTransferDeliveryRepository interface {
+	repository.BaseRepository[entity.StockTransferDelivery]
+	// Tambahkan custom method jika perlu
+}
+
+type StockTransferDeliveryRepositoryImpl struct {
+	*repository.BaseRepositoryImpl[entity.StockTransferDelivery]
+}
+
+func NewStockTransferDeliveryRepository(db *gorm.DB) StockTransferDeliveryRepository {
+	return &StockTransferDeliveryRepositoryImpl{
+		BaseRepositoryImpl: repository.NewBaseRepository[entity.StockTransferDelivery](db),
+	}
+}

internal/modules/inventory/transfers/repositories/stock_transfer_delivery_item.repository.go

@@ -0,0 +1,22 @@
+package repositories
+
+import (
+	"gitlab.com/mbugroup/lti-api.git/internal/common/repository"
+	entity "gitlab.com/mbugroup/lti-api.git/internal/entities"
+	"gorm.io/gorm"
+)
+
+type StockTransferDeliveryItemRepository interface {
+	repository.BaseRepository[entity.StockTransferDeliveryItem]
+	// Tambahkan custom method jika perlu
+}
+
+type StockTransferDeliveryItemRepositoryImpl struct {
+	*repository.BaseRepositoryImpl[entity.StockTransferDeliveryItem]
+}
+
+func NewStockTransferDeliveryItemRepository(db *gorm.DB) StockTransferDeliveryItemRepository {
+	return &StockTransferDeliveryItemRepositoryImpl{
+		BaseRepositoryImpl: repository.NewBaseRepository[entity.StockTransferDeliveryItem](db),
+	}
+}

internal/modules/inventory/transfers/repositories/stock_transfer_detail.repository.go

@@ -0,0 +1,29 @@
+// Find all details by StockTransferId
+
+package repositories
+
+import (
+	"context"
+
+	"gitlab.com/mbugroup/lti-api.git/internal/common/repository"
+	entity "gitlab.com/mbugroup/lti-api.git/internal/entities"
+	"gorm.io/gorm"
+)
+
+type StockTransferDetailRepository interface {
+	repository.BaseRepository[entity.StockTransferDetail]
+	FindByTransferId(ctx context.Context, transferId uint64, out *[]entity.StockTransferDetail) error
+}
+
+type StockTransferDetailRepositoryImpl struct {
+	*repository.BaseRepositoryImpl[entity.StockTransferDetail]
+}
+
+func NewStockTransferDetailRepository(db *gorm.DB) StockTransferDetailRepository {
+	return &StockTransferDetailRepositoryImpl{
+		BaseRepositoryImpl: repository.NewBaseRepository[entity.StockTransferDetail](db),
+	}
+}
+func (r *StockTransferDetailRepositoryImpl) FindByTransferId(ctx context.Context, transferId uint64, out *[]entity.StockTransferDetail) error {
+	return r.DB().WithContext(ctx).Where("stock_transfer_id = ?", transferId).Find(out).Error
+}

internal/modules/inventory/transfers/route.go

@@ -0,0 +1,27 @@
+package transfers
+
+import (
+	// m "gitlab.com/mbugroup/lti-api.git/internal/middleware"
+	controller "gitlab.com/mbugroup/lti-api.git/internal/modules/inventory/transfers/controllers"
+	transfer "gitlab.com/mbugroup/lti-api.git/internal/modules/inventory/transfers/services"
+	user "gitlab.com/mbugroup/lti-api.git/internal/modules/users/services"
+
+	"github.com/gofiber/fiber/v2"
+)
+
+func TransferRoutes(v1 fiber.Router, u user.UserService, s transfer.TransferService) {
+	ctrl := controller.NewTransferController(s)
+
+	route := v1.Group("/transfers")
+
+	// route.Get("/", m.Auth(u), ctrl.GetAll)
+	// route.Post("/", m.Auth(u), ctrl.CreateOne)
+	// route.Get("/:id", m.Auth(u), ctrl.GetOne)
+	// route.Patch("/:id", m.Auth(u), ctrl.UpdateOne)
+	// route.Delete("/:id", m.Auth(u), ctrl.DeleteOne)
+
+	route.Get("/", ctrl.GetAll)
+	route.Post("/", ctrl.CreateOne)
+	route.Get("/:id", ctrl.GetOne)
+
+}

internal/modules/inventory/transfers/services/transfer.service.go

@@ -0,0 +1,313 @@
+package service
+
+import (
+	"errors"
+	"fmt"
+	"strings"
+
+	entity "gitlab.com/mbugroup/lti-api.git/internal/entities"
+	rProductWarehouse "gitlab.com/mbugroup/lti-api.git/internal/modules/inventory/product-warehouses/repositories"
+	rStockTransfer "gitlab.com/mbugroup/lti-api.git/internal/modules/inventory/transfers/repositories"
+	validation "gitlab.com/mbugroup/lti-api.git/internal/modules/inventory/transfers/validations"
+	rSupplier "gitlab.com/mbugroup/lti-api.git/internal/modules/master/suppliers/repositories"
+	rStockLogs "gitlab.com/mbugroup/lti-api.git/internal/modules/shared/stock-logs/repositories"
+	"gitlab.com/mbugroup/lti-api.git/internal/utils"
+
+	"github.com/go-playground/validator/v10"
+	"github.com/gofiber/fiber/v2"
+	"github.com/sirupsen/logrus"
+	"gorm.io/gorm"
+)
+
+type TransferService interface {
+	GetAll(ctx *fiber.Ctx, params *validation.Query) ([]entity.StockTransfer, int64, error)
+	GetOne(ctx *fiber.Ctx, id uint) (*entity.StockTransfer, error)
+	CreateOne(ctx *fiber.Ctx, req *validation.TransferRequest) (*entity.StockTransfer, error)
+}
+
+type transferService struct {
+	Log                           *logrus.Logger
+	Validate                      *validator.Validate
+	StockTransferRepo             rStockTransfer.StockTransferRepository
+	StockTransferDetailRepo       rStockTransfer.StockTransferDetailRepository
+	StockTransferDeliveryRepo     rStockTransfer.StockTransferDeliveryRepository
+	StockTransferDeliveryItemRepo rStockTransfer.StockTransferDeliveryItemRepository
+	StockLogsRepository           rStockLogs.StockLogRepository
+	ProductWarehouseRepo          rProductWarehouse.ProductWarehouseRepository
+	SupplierRepo                  rSupplier.SupplierRepository
+}
+
+func NewTransferService(validate *validator.Validate, stockTransferRepo rStockTransfer.StockTransferRepository, stockTransferDetailRepo rStockTransfer.StockTransferDetailRepository, stockTransferDeliveryRepo rStockTransfer.StockTransferDeliveryRepository, stockTransferDeliveryItemRepo rStockTransfer.StockTransferDeliveryItemRepository, stockLogsRepo rStockLogs.StockLogRepository, productWarehouseRepo rProductWarehouse.ProductWarehouseRepository, supplierRepo rSupplier.SupplierRepository) TransferService {
+	return &transferService{
+		Log:                           utils.Log,
+		Validate:                      validate,
+		StockTransferRepo:             stockTransferRepo,
+		StockTransferDetailRepo:       stockTransferDetailRepo,
+		StockTransferDeliveryRepo:     stockTransferDeliveryRepo,
+		StockTransferDeliveryItemRepo: stockTransferDeliveryItemRepo,
+		StockLogsRepository:           stockLogsRepo,
+		ProductWarehouseRepo:          productWarehouseRepo,
+		SupplierRepo:                  supplierRepo,
+	}
+}
+func (s transferService) withRelations(db *gorm.DB) *gorm.DB {
+	return db.
+		Preload("CreatedUser").
+		Preload("FromWarehouse").
+		Preload("FromWarehouse.Location").
+		Preload("FromWarehouse.Area").
+		Preload("ToWarehouse").
+		Preload("ToWarehouse.Location").
+		Preload("ToWarehouse.Area").
+		Preload("Details").
+		Preload("Deliveries.Items")
+}
+
+func (s transferService) GetAll(c *fiber.Ctx, params *validation.Query) ([]entity.StockTransfer, int64, error) {
+	if err := s.Validate.Struct(params); err != nil {
+		return nil, 0, err
+	}
+
+	offset := (params.Page - 1) * params.Limit
+
+	transfers, total, err := s.StockTransferRepo.GetAll(c.Context(), offset, params.Limit, func(db *gorm.DB) *gorm.DB {
+		db = s.withRelations(db)
+		if params.Search != "" {
+			db = db.Where("movement_number LIKE ?", "%"+strings.TrimSpace(params.Search)+"%")
+		}
+		return db.Order("created_at DESC").Order("updated_at DESC")
+	})
+
+	if err != nil {
+		return nil, 0, err
+	}
+
+	s.Log.Infof("Retrieved %d transfers", len(transfers))
+
+	return transfers, total, nil
+
+}
+
+func (s transferService) GetOne(c *fiber.Ctx, id uint) (*entity.StockTransfer, error) {
+	var transfer entity.StockTransfer
+
+	// gunakan repo secara langsung
+	transferPtr, err := s.StockTransferRepo.GetByID(c.Context(), id, func(db *gorm.DB) *gorm.DB {
+		return s.withRelations(db)
+	})
+	if err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return nil, fiber.NewError(fiber.StatusNotFound, "Transfer not found")
+		}
+		s.Log.Errorf("Failed to get transfer by ID: %+v", err)
+		return nil, fiber.NewError(fiber.StatusInternalServerError, "Failed to get transfer")
+	}
+
+	s.Log.Infof("Retrieved transfer: %+v", transfer)
+
+	return transferPtr, nil
+}
+
+func (s *transferService) CreateOne(c *fiber.Ctx, req *validation.TransferRequest) (*entity.StockTransfer, error) {
+
+	// Validasi stok di gudang asal harus exist dan mencukupi
+	for _, product := range req.Products {
+		sourcePW, err := s.ProductWarehouseRepo.GetProductWarehouseByProductAndWarehouseID(
+			c.Context(), uint(product.ProductID), uint(req.SourceWarehouseID),
+		)
+		if err != nil {
+			if errors.Is(err, gorm.ErrRecordNotFound) {
+				return nil, fiber.NewError(fiber.StatusBadRequest, fmt.Sprintf("Stok produk %d tidak tersedia di gudang asal", product.ProductID))
+			}
+			return nil, fiber.NewError(fiber.StatusInternalServerError, "Gagal cek stok produk di gudang asal")
+		}
+		if sourcePW.Quantity < product.ProductQty {
+			return nil, fiber.NewError(fiber.StatusBadRequest, fmt.Sprintf("Stok produk %d di gudang asal tidak cukup", product.ProductID))
+		}
+	}
+
+	// validasi total qty harus lebih besar dari atau sama dengan total qty di delivery compare berdasarkan productid
+	deliveryQtyMap := make(map[uint]float64)
+	for _, delivery := range req.Deliveries {
+		for _, prod := range delivery.Products {
+			deliveryQtyMap[prod.ProductID] += prod.ProductQty
+		}
+	}
+
+	// Cek: qty delivery tidak boleh melebihi qty di root
+	for _, product := range req.Products {
+		if deliveryQtyMap[product.ProductID] > product.ProductQty {
+			return nil, fiber.NewError(fiber.StatusBadRequest,
+				fmt.Sprintf("Total qty delivery untuk produk %d (%v) melebihi qty transfer (%v)", product.ProductID, deliveryQtyMap[product.ProductID], product.ProductQty))
+		}
+	}
+
+	// cek suplier id caegory BOP cek by id
+	for _, delivery := range req.Deliveries {
+		supplier, err := s.SupplierRepo.GetByID(c.Context(), uint(delivery.SupplierID), nil)
+		if err != nil {
+			if errors.Is(err, gorm.ErrRecordNotFound) {
+				return nil, fiber.NewError(fiber.StatusBadRequest, fmt.Sprintf("Supplier dengan ID %d tidak ditemukan", delivery.SupplierID))
+			}
+			return nil, fiber.NewError(fiber.StatusInternalServerError, "Gagal cek data supplier")
+		}
+		if supplier.Category != "BOP" {
+			return nil, fiber.NewError(fiber.StatusBadRequest, fmt.Sprintf("Supplier dengan ID %d bukan kategori BOP", delivery.SupplierID))
+		}
+	}
+
+	// Generate movement number
+	// Format: PND-MBU-00001
+	seqNum, err := s.StockTransferRepo.GetNextMovementNumber(c.Context())
+	if err != nil {
+		s.Log.Errorf("Failed to get next movement number: %+v", err)
+		return nil, fiber.NewError(fiber.StatusInternalServerError, "Failed to generate movement number")
+	}
+	movementNumber := fmt.Sprintf("PND-MBU-%05d", seqNum)
+	transferDate, _ := utils.ParseDateString(req.TransferDate)
+
+	entityTransfer := &entity.StockTransfer{
+		FromWarehouseId: uint64(req.SourceWarehouseID),
+		ToWarehouseId:   uint64(req.DestinationWarehouseID),
+		Reason:          req.TransferReason,
+		TransferDate:    transferDate,
+		MovementNumber:  movementNumber,
+		CreatedBy:       1, //todo: get from token
+	}
+
+	// Save the transfer entity to the database
+	err = s.StockTransferRepo.DB().WithContext(c.Context()).Transaction(func(tx *gorm.DB) error {
+
+		// Insert header
+		if err := s.StockTransferRepo.WithTx(tx).CreateOne(c.Context(), entityTransfer, nil); err != nil {
+			s.Log.Errorf("Failed to create stock transfer: %+v", err)
+			return err
+		}
+		s.Log.Infof("Stock transfer created: %+v", entityTransfer.Id)
+
+		// insert ke details
+		var details []*entity.StockTransferDetail
+		for _, product := range req.Products {
+			details = append(details, &entity.StockTransferDetail{
+				StockTransferId: entityTransfer.Id,
+				ProductId:       uint64(product.ProductID),
+				Quantity:        product.ProductQty,
+			})
+		}
+		if err := s.StockTransferDetailRepo.WithTx(tx).CreateMany(c.Context(), details, nil); err != nil {
+			s.Log.Errorf("Failed to create stock transfer details: %+v", err)
+			return err
+		}
+		s.Log.Infof("Stock transfer details created for transfer ID: %+v", entityTransfer.Id)
+
+		// Tambahkan proses insert delivery
+		var deliveries []*entity.StockTransferDelivery
+		for _, delivery := range req.Deliveries {
+			deliveries = append(deliveries, &entity.StockTransferDelivery{
+				StockTransferId:   entityTransfer.Id,
+				SupplierId:        uint64(delivery.SupplierID),
+				VehiclePlate:      delivery.VehiclePlate,
+				DriverName:        delivery.DriverName,
+				DocumentPath:      "dummy duls", // todo: tunggu ada aws baru proses
+				ShippingCostItem:  delivery.DeliveryCostPerItem,
+				ShippingCostTotal: delivery.DeliveryCost,
+			})
+		}
+		if err := s.StockTransferDeliveryRepo.WithTx(tx).CreateMany(c.Context(), deliveries, nil); err != nil {
+			s.Log.Errorf("Failed to create stock transfer deliveries: %+v", err)
+			return err
+		}
+		// tambahkan insert ke delivery items sebagai pivot
+		detailMap := make(map[uint64]uint64)
+		for _, d := range details {
+			detailMap[d.ProductId] = d.Id
+		}
+
+		var deliveryItems []*entity.StockTransferDeliveryItem
+
+		for i, delivery := range deliveries {
+			item := req.Deliveries[i]
+			for _, prod := range item.Products {
+				detailID, ok := detailMap[uint64(prod.ProductID)]
+				if !ok {
+					return fmt.Errorf("produk %d tidak ditemukan di detail", prod.ProductID)
+				}
+				deliveryItems = append(deliveryItems, &entity.StockTransferDeliveryItem{
+					StockTransferDeliveryId: delivery.Id,
+					StockTransferDetailId:   detailID,
+					Quantity:                prod.ProductQty,
+				})
+			}
+		}
+		if err := s.StockTransferDeliveryItemRepo.WithTx(tx).CreateMany(c.Context(), deliveryItems, nil); err != nil {
+			s.Log.Errorf("Failed to create stock transfer delivery items: %+v", err)
+			return err
+		}
+		s.Log.Infof("Stock transfer delivery items created for transfer ID: %+v", entityTransfer.Id)
+
+		// Proses pengurangan stok di gudang asal dan penambahan stok di gudang tujuan
+		for _, product := range req.Products {
+			// Kurangi stok di gudang asal
+			sourcePW, err := s.ProductWarehouseRepo.GetProductWarehouseByProductAndWarehouseID(c.Context(), uint(product.ProductID), uint(req.SourceWarehouseID))
+			if err != nil {
+				s.Log.Errorf("Failed to get source product warehouse: %+v", err)
+				return fiber.NewError(fiber.StatusInternalServerError, "Failed to get source product warehouse")
+			}
+			if sourcePW.Quantity < product.ProductQty {
+				s.Log.Errorf("Insufficient stock in source warehouse for product ID: %+v", product.ProductID)
+				return fiber.NewError(fiber.StatusBadRequest, fmt.Sprintf("Insufficient stock in source warehouse for product ID: %d", product.ProductID))
+			}
+			sourcePW.Quantity -= product.ProductQty
+			if err := s.ProductWarehouseRepo.WithTx(tx).UpdateOne(c.Context(), sourcePW.Id, sourcePW, nil); err != nil {
+				s.Log.Errorf("Failed to update source product warehouse: %+v", err)
+				return err
+			}
+			s.Log.Infof("Source product warehouse updated: %+v", sourcePW.Id)
+
+			// Tambah stok di gudang tujuan
+			destPW, err := s.ProductWarehouseRepo.GetProductWarehouseByProductAndWarehouseID(
+				c.Context(), uint(product.ProductID), uint(req.DestinationWarehouseID),
+			)
+			if err != nil && !errors.Is(err, gorm.ErrRecordNotFound) {
+				s.Log.Errorf("Failed to get destination product warehouse: %+v", err)
+				return fiber.NewError(fiber.StatusInternalServerError, "Failed to get destination product warehouse")
+			}
+			if err != nil && errors.Is(err, gorm.ErrRecordNotFound) {
+				// Jika belum ada record untuk produk di gudang tujuan, buat baru
+				destPW = &entity.ProductWarehouse{
+					ProductId:   uint(product.ProductID),
+					WarehouseId: uint(req.DestinationWarehouseID),
+					Quantity:    0,
+					CreatedBy:   1, // TODO: should Get from auth middleware
+				}
+				if err := s.ProductWarehouseRepo.WithTx(tx).CreateOne(c.Context(), destPW, nil); err != nil {
+					s.Log.Errorf("Failed to create destination product warehouse: %+v", err)
+					return fiber.NewError(fiber.StatusInternalServerError, "Failed to create destination product warehouse")
+				}
+				s.Log.Infof("Destination product warehouse created: %+v", destPW.Id)
+			}
+			// Update stok di gudang tujuan
+			destPW.Quantity += product.ProductQty
+			if err := s.ProductWarehouseRepo.WithTx(tx).UpdateOne(c.Context(), destPW.Id, destPW, nil); err != nil {
+				s.Log.Errorf("Failed to update destination product warehouse: %+v", err)
+				return err
+			}
+			s.Log.Infof("Destination product warehouse updated: %+v", destPW.Id)
+
+		}
+
+		return nil
+	})
+
+	if err != nil {
+		s.Log.Errorf("Transaction failed in CreateOne: %+v", err)
+		return nil, fiber.NewError(fiber.StatusInternalServerError, "Failed to process transfer transaction")
+	}
+
+	// Ambil data lengkap hasil create dengan GetOne (agar preload relasi sama dengan GetOne)
+	result, err := s.GetOne(c, uint(entityTransfer.Id))
+	if err != nil {
+		return nil, err
+	}
+	return result, nil
+}

internal/modules/inventory/transfers/validations/transfer.validation.go

@@ -0,0 +1,40 @@
+package validation
+
+type Create struct {
+	Name string `json:"name" validate:"required_strict,min=3"`
+}
+
+type Query struct {
+	Page   int    `query:"page" validate:"omitempty,number,min=1"`
+	Limit  int    `query:"limit" validate:"omitempty,number,min=1,max=100"`
+	Search string `query:"search" validate:"omitempty,max=50"`
+}
+
+type TransferProduct struct {
+	ProductID  uint    `json:"product_id" validate:"required"`
+	ProductQty float64 `json:"product_qty" validate:"required,gt=0"`
+}
+
+type TransferDeliveryProduct struct {
+	ProductID  uint    `json:"product_id" validate:"required"`
+	ProductQty float64 `json:"product_qty" validate:"required,gt=0"`
+}
+
+type TransferDelivery struct {
+	DeliveryCost        float64                   `json:"delivery_cost" validate:"required"`
+	DeliveryCostPerItem float64                   `json:"delivery_cost_per_item" validate:"required"`
+	DocumentIndex       int                       `json:"document_index" validate:"min=0"`
+	DriverName          string                    `json:"driver_name" validate:"required"`
+	VehiclePlate        string                    `json:"vehicle_plate" validate:"required"`
+	SupplierID          uint                      `json:"supplier_id" validate:"required"`
+	Products            []TransferDeliveryProduct `json:"products" validate:"required,dive"`
+}
+
+type TransferRequest struct {
+	TransferReason         string             `json:"transfer_reason" validate:"required"`
+	TransferDate           string             `json:"transfer_date" validate:"required,datetime=2006-01-02"`
+	SourceWarehouseID      uint               `json:"source_warehouse_id" validate:"required"`
+	DestinationWarehouseID uint               `json:"destination_warehouse_id" validate:"required"`
+	Products               []TransferProduct  `json:"products" validate:"required,dive"`
+	Deliveries             []TransferDelivery `json:"deliveries" validate:"required,dive"`
+}

internal/modules/master/products/repositories/product.repository.go

@@ -13,6 +13,7 @@ type ProductRepository interface {
 	NameExists(ctx context.Context, name string, excludeID *uint) (bool, error)
 	SkuExists(ctx context.Context, sku string, excludeID *uint) (bool, error)
 	UomExists(ctx context.Context, uomID uint) (bool, error)
+	IdExists(ctx context.Context, id uint) (bool, error)
 	CategoryExists(ctx context.Context, categoryID uint) (bool, error)
 	GetSuppliersByIDs(ctx context.Context, supplierIDs []uint) ([]entity.Supplier, error)
 	SyncSuppliersDiff(ctx context.Context, tx *gorm.DB, productID uint, supplierIDs []uint) error
@@ -194,3 +195,7 @@ func (r *ProductRepositoryImpl) GetFlags(ctx context.Context, productID uint) ([
 	}
 	return flags, nil
 }
+
+func (r *ProductRepositoryImpl) IdExists(ctx context.Context, id uint) (bool, error) {
+	return repository.Exists[entity.Product](ctx, r.DB(), id)
+}

internal/modules/master/suppliers/repositories/supplier.repository.go

@@ -11,6 +11,7 @@ import (
 type SupplierRepository interface {
 	repository.BaseRepository[entity.Supplier]
 	NameExists(ctx context.Context, name string, excludeID *uint) (bool, error)
+	
 }
 
 type SupplierRepositoryImpl struct {

internal/modules/master/warehouses/repositories/warehouse.repository.go

@@ -14,6 +14,7 @@ type WarehouseRepository interface {
 	LocationExists(ctx context.Context, locationId uint) (bool, error)
 	KandangExists(ctx context.Context, kandangId uint) (bool, error)
 	NameExists(ctx context.Context, name string, excludeID *uint) (bool, error)
+	IdExists(ctx context.Context, id uint) (bool, error)
 }
 
 type WarehouseRepositoryImpl struct {
@@ -43,3 +44,6 @@ func (r *WarehouseRepositoryImpl) KandangExists(ctx context.Context, kandangId u
 func (r *WarehouseRepositoryImpl) NameExists(ctx context.Context, name string, excludeID *uint) (bool, error) {
 	return repository.ExistsByName[entity.Warehouse](ctx, r.db, name, excludeID)
 }
+func (r *WarehouseRepositoryImpl) IdExists(ctx context.Context, id uint) (bool, error) {
+	return repository.Exists[entity.Warehouse](ctx, r.db, id)
+}

internal/utils/time.go

@@ -0,0 +1,25 @@
+package utils
+
+import (
+	"time"
+	"errors"
+)
+
+// ParseDateString mengubah string "YYYY-MM-DD" menjadi time.Time
+func ParseDateString(dateStr string) (time.Time, error) {
+	if dateStr == "" {
+		return time.Time{}, errors.New("date string is empty")
+	}
+
+	parsed, err := time.Parse("2006-01-02", dateStr)
+	if err != nil {
+		return time.Time{}, errors.New("invalid date format, expected YYYY-MM-DD")
+	}
+
+	return parsed, nil
+}
+
+// FormatDate mengubah time.Time menjadi string "YYYY-MM-DD"
+func FormatDate(t time.Time) string {
+	return t.Format("2006-01-02")
+}